Break neck - Idioms by The Free Dictionary
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break one's neck (to do something) and break one's back (to do something)
Fig. to work very hard to accomplish something. I broke my neck to get here on time. There is no point in breaking your back. Take your time.
break (one's) neck
To make the utmost possible effort.
References in periodicals archive
Hovering over all the pluses and minuses of ``Air Force One'' is the amusing/alarming idea that what America wants - that what America needs - is a president who's not afraid to break necks
, if not by proxy then with his bare hands.
Now the Prince can break necks
, toss people off cliffs and use a multitude of kicks and sword moves to cut enemies in half.
We need a hardness about us and need someone who is prepared to break necks